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EDUPEDIYA – FOOD ADULTERATION PART -3   CHEMICAL METHODS TO IDENTIFY ADULTERATED FOOD: FRUITS & VEGETABLES: METHOD 1: take a cotton piece soaked with water or oil and rub the outer surface of green vegetables or fruits, if cotton turns to green color it indicates the presence of malachite green. Ø In sweet potato same technique is followed, if cotton absorbs the color it indicates the presence of rhodamine B.     ADULTERANT: malachite green& rhodamine B. METHOD 2: fruits are mainly adulterated pesticides, plant hormones, carbide for ripening fruits. ADULTERANT: carbide, pesticides. HONEY: METHOD 1: take a sample and put in a glass of water, if honey dissolves in water it indicates the presence of sugar syrup. Normal honey will settle at the bottom. ADULTERANT: sugar syrup. METHOD 2: take a match stick dipped in matchstick and strikes the matchbox if light ups it is pure otherwise it is adulterated because honey is inflammable. ADU...

EDUPEDIYA – FOOD ADULTERATION PART - 2   COMMON ADULTERATED FOODS IN INDIA: ·        Milk ·        Tea ·        Coffee ·        Vegetable   &  Fruits ·        Honey ·        Dal ·        Spices ·        Butter and cream ·        Ice cream ·        Jaggery CHEMICAL METHODS TO IDENTIFY ADULTERATED FOOD: MILK: METHOD 1 : drop milk on a polished slanting surface when milk flows leaving white trial behind it, but adulterated with water flows without leaving mark. ADULTERANT: water. METHOD 2: add few drops of iodine solution to milk sample, if sample turns blue color it indicates the presence of starch. ADULTERANT: starch. METHOD 3: add ...